A direct-reading remote water meter

Abstract

The present invention discloses a direct-reading remote water meter, which includes a water meter and a bracket arranged above the water meter. The length of the pointer in the pointer indication dial of the water meter corresponds to the radius of the pointer indication dial. A detection disk corresponding to the pointer indication dial is arranged on the bracket. The detection disk includes detection areas corresponding to the pointer values of the pointer indication dial. Different light-transmitting areas are opened in each detection area. A plurality of pairs of laser emitters and laser receivers are arranged on the bracket above the detection disk. The laser emitters and laser receivers are connected to a control unit, and the control unit is transmitted to a host computer through a transmission system. The host computer is provided with a first control key for controlling the start and stop of the laser emitters and laser receivers. The present invention is anti-magnetic interference, can read the instantaneous reading of the water meter, and does not need to be powered on all the time; it does not need to change the structure of the mechanical water meter, nor does it need to install sensor devices inside the water meter, and is safe, reliable and convenient for maintenance.

Description

Technical Field

[0001] The present invention relates to the technical field of remote monitoring of water meters, and particularly to a direct-reading remote water meter and its control method used during line maintenance. Background Art

[0002] At present, most water supply companies adopt the traditional manual meter reading method. However, there have always been problems such as incorrect reading, missed reading, inaccurate valuation, inability to remotely transmit data, and inability to monitor data. To solve the above problems, in the prior art, related solutions generally fall into two types: pulse-type remote water meters and direct-reading remote water meters.

[0003] Pulse-type water meters include photoelectric type, Hall type, reed switch type, etc. The signal transmitted by a pulse-type water meter is a pulse, and the pulses are accumulated into data, which is the dial data. Since the finally obtained data is accumulated data, if the line is interrupted or the battery runs out of power during the accumulation process, the accumulation will be interrupted and data errors will occur. After repair, the base number also needs to be reset. Another problem with pulse-type water meters is their poor anti-magnetic interference ability.

[0004] Direct-reading remote water meters include photoelectric type and camera type. The principle is that there are 5 pairs of light-emitting and receiving devices. Through reasonable settings and calculations, according to the different numbers of light sources received by the reflecting surface and the light-transmitting holes, the position of the sub-wheel is determined. The main problems to be solved by the photoelectric direct-reading remote water meter are, one is that the sensing positions on each digit wheel need to be quite accurate; the other is that since the photoelectric direct-reading module is installed inside the mechanical meter, after long-term operation, some tap water entering the digit wheel box will cause the photoelectric module to fail due to leakage and short circuit. The camera-type direct-reading remote water meter is to install a camera in front of the mechanical digit wheel display window, transmit the captured digital image, and then process it to obtain the reading of the water meter. This processing method needs to solve technical problems such as image processing, image transmission, and decoding transmission. Not only is the data processing difficult, but also the cleanliness requirements for the surface of the water meter are relatively high, so the reliability is poor. Summary of the Invention

[0005] Aiming at the deficiencies in the above background art, the present invention proposes a direct-reading remote water meter and its control method, which solves the technical problem of poor reliability of pulse-type remote water meters and direct-reading remote water meters in the prior art.

[0006] The technical solution of the present invention is implemented as follows: A direct-reading remote water meter includes a water meter and a bracket arranged above the water meter. The length of the pointer in the pointer indication dial of the water meter corresponds to the radius of the pointer indication dial. A detection dial corresponding to the pointer indication dial is arranged on the bracket. The detection dial includes detection areas corresponding to the pointer values of the pointer indication dial. Different light-transmitting areas are provided in each detection area. A plurality of pairs of laser emitters and laser receivers are arranged on the bracket above the detection dial. The laser emitters and laser receivers are connected to a control unit, and the control unit is transmitted to the host computer through a transmission system. The host computer is provided with a first control key for controlling the start and stop of the laser emitters and laser receivers. In this technical solution, the laser emitter emits a laser signal to the pointer indication dial, and the laser receiver can receive the laser signal reflected by the pointer in the pointer indication dial. Through the interference of the different light-transmitting areas provided on the detection dial on the transmission signals of the laser emitter and the laser receiver, the laser emitter and the laser receiver corresponding to the pointer indication dial can detect different signal combinations. The control unit converts the signal combinations, and can convert the binary code of the signal combinations into a decimal number, and thus can obtain the value corresponding to the pointer in the pointer indication dial.

[0007] Further, the laser emitters and laser receivers are vertically corresponding to the pointer indication dial up and down, and the detection dial is arranged obliquely with respect to the pointer indication dial, which can ensure that the laser signal when the laser emitter is blocked by the light-blocking area on the detection dial can be reflected out and will not be received by the laser receiver; the laser signal passing through the light-transmitting area on the detection dial by the laser emitter can be vertically projected onto the pointer indication dial. When the laser signal is vertically projected onto the pointer in the pointer indication dial, the laser signal will be directly reflected to the corresponding laser receiver and be received by the laser receiver; if the laser signal passing through the light-transmitting area on the detection dial by the laser emitter can be vertically projected onto the pointer indication dial, when the laser signal does not project onto the pointer in the pointer indication dial, the laser signal will not be received by the corresponding laser receiver. Therefore, the indication position of the pointer in the pointer indication dial can be judged by the laser emitters and laser receivers.

[0008] Further, the detection dial includes a central disc and a first ring, a second ring and a third ring sequentially extending radially outward along the central disc. The light-transmitting areas are distributed on the central disc, the first ring, the second ring and the third ring. The laser emitters and laser receivers are arranged along the radial direction of the detection dial and are vertically corresponding to the central disc, the first ring, the second ring and the third ring respectively.

[0009] The laser emitter and the laser receiver are provided in four pairs and are rotatably arranged on the bracket by a rotating rod. A micro stepping motor coaxial with the pointer indication dial is fixedly arranged on the bracket. The inner end of the rotating rod is connected to the drive shaft of the micro stepping motor. The micro stepping motor is connected to the control unit. The upper computer is provided with a second control key for controlling the start and stop of the micro stepping motor. When reading the meter, only need to press the second control key to make the micro stepping motor drive the rotating rod to rotate. The control unit can control the micro stepping motor to rotate only one week each time it starts. Then the rotating rod will drive the laser emitter and the laser receiver to rotate one week above the detection disc. The laser emitter and the laser receiver on the rotating rod will transmit detection signals to the control unit while rotating. Furthermore, the control unit can detect the indication position of the pointer on the pointer indication dial.

[0010] The first control key and the second control key are the same key. Through one-key control, the laser emitter, the laser receiver and the micro stepping motor can be started simultaneously.

[0011] The detection area includes ten fan-shaped areas, and the ten fan-shaped areas correspond to the 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8, 8-9, 9-0 numerical areas on the pointer indication dial in sequence.

[0012] The fan-shaped area corresponding to the 0-1 area of the detection disk and the pointer indication scale is completely opaque, the third ring of the fan-shaped area corresponding to the 1-2 area of the pointer indication scale is transparent, the second ring of the fan-shaped area corresponding to the 2-3 area of the pointer indication scale is transparent, the second and third rings of the fan-shaped area corresponding to the 3-4 area of the pointer indication scale are transparent, the first ring of the fan-shaped area corresponding to the 4-5 area of the pointer indication scale is transparent, the first and third rings of the fan-shaped area corresponding to the 5-6 area of the pointer indication scale are transparent, the first and second rings of the fan-shaped area corresponding to the 6-7 area of the pointer indication scale are transparent, the fan-shaped area corresponding to the 7-8 area of the pointer indication scale is completely transparent, the central disk of the fan-shaped area corresponding to the 8-9 area of the pointer indication scale is transparent, and the central disk and the third ring of the fan-shaped area corresponding to the 9-0 area of the pointer indication scale are transparent. When the pointer on the pointer indication scale is in the corresponding area, when the rotating rod is above the 1-2 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 0000, when the rotating rod is above the 2-3 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 0010, when the rotating rod is above the 3-4 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 0011, when the rotating rod is above the 4-5 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 0100, when the rotating rod is above the 5-6 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 0101, when the rotating rod is above the 6-7 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 0110, when the rotating rod is above the 7-8 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 0111, when the rotating rod is above the 8-9 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 1000, and when the rotating rod is above the 9-0 area, the detection signals of the four groups of laser emitters and laser receivers are converted into binary code 1001; then the decimal values corresponding to each binary code are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 respectively, that is, they correspond to the values corresponding to the pointer on the pointer indication scale.

[0013] The present invention uses a laser emitter and a laser receiver to pass through a special detection disk to determine whether the pointer in the pointer indication dial exists at different positions, so as to determine the size of the pointer display number, and then accurately read the reading of the water meter. The present invention is anti-magnetic interference, can read the instantaneous reading of the water meter, and does not need to be in the power-on state all the time; the detection unit is independent of the mechanical water meter, and does not need to change the structure of the mechanical water meter, that is, there is no need to set a reflecting surface or a transmission hole in the pointer indication dial; nor is it necessary to install a sensor device inside the water meter, avoiding the defect that the optoelectronic module can work reliably in water for a long time, is safe and reliable, and is convenient for maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the embodiments of the present invention, the drawings required for the description of the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0015] Figure 1 It is a schematic cross-sectional structure diagram of the present invention;

[0016] Figure 2 is Figure 1 the top view of the detection disk in DETAILED DESCRIPTION OF THE EMBODIMENTS

[0017] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all of them. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0018] Embodiment 1, a direct-reading remote transmission water meter, as Figure 1 shown, includes a water meter 1 and a bracket 2 clamped above the water meter 1. The length of the pointer 12 in the pointer indication dial 11 of the water meter 1 corresponds to the radius of the pointer indication dial 11, which is convenient for detection. A detection disk 3 corresponding to each pointer indication dial 11 is provided on the bracket 2. The detection disk 3 includes a detection area corresponding to the value of the pointer 12 of the pointer indication dial 11, and different light-transmitting areas are opened in each detection area.

[0019] A plurality of pairs of laser emitters 4 and laser receivers 5 are provided on the bracket 2 above the detection disk 3. The laser emitters 4 and the laser receivers 5 are connected to a control unit 6. The control unit 6 is transmitted to the host computer through a transmission system. The host computer is provided with a first control key for controlling the start and stop of the laser emitters 4 and the laser receivers 5. The start and stop of the laser emitters 4 and the laser receivers 5 can be controlled through the first control key.

[0020] The laser emitter 4 emits a laser signal to the pointer indication dial 11. The laser receiver 5 can receive the laser signal reflected by the pointer 12 in the pointer indication dial 11. By the interference of different light-transmitting areas opened on the detection disk 3 on the transmission signals of the laser emitter and the laser receiver, the laser emitters 4 and the laser receivers 5 corresponding to the pointer indication dial 11 can detect different signal combinations. The control unit 6 converts the signal combinations, can convert the binary code of the signal combinations into a decimal number, and then can obtain the value corresponding to the pointer 12 in the pointer indication dial 11. The corresponding value is remotely transmitted through the transmission system.

[0021] The laser emitters 4 and the laser receivers 5 are rotatably arranged on the bracket 2 through a rotating rod 21. A micro stepping motor 22 coaxial with the pointer indication dial 11 is fixedly arranged on the bracket 2. The inner end of the rotating rod 21 is connected to the drive shaft of the micro stepping motor 22. The micro stepping motor 22 is connected to the control unit 6. The host computer is provided with a second control key for controlling the start and stop of the micro stepping motor 22. When reading the meter is needed, only need to press the second control key to make the micro stepping motor 22 drive the rotating rod 21 to rotate. The control unit 6 can control the micro stepping motor 22 to rotate only one week each time it starts. Then the rotating rod 21 will drive the laser emitters 4 and the laser receivers 5 to rotate one week above the detection disk 3. The laser emitters 4 and the laser receivers 5 on the rotating rod 21 will transmit detection signals to the control unit 6 while rotating.

[0022] The laser emitter 4 and the laser receiver 5 are vertically corresponding to the pointer indication dial 11 up and down. The detection disc 3 is inclined with respect to the pointer indication dial 11, which can ensure that the laser signal can be reflected when the laser emitter 4 is blocked by the light-impermeable area on the detection disc 3 and will not be received by the laser receiver 5. At this time, the signal received by the control unit 6 is 0. The laser signal passing through the light-transmitting area on the detection disc 3 can be vertically projected onto the pointer indication dial 11. When the laser signal is vertically projected onto the pointer 12 in the pointer indication dial 11, the laser signal will be directly reflected to the corresponding laser receiver 5 and received by the laser receiver 5. At this time, the control unit 6 will receive the signal 1. If the laser signal passing through the light-transmitting area on the detection disc 3 can be vertically projected onto the pointer indication dial 11 and the laser signal does not hit the pointer 12 in the pointer indication dial 11, the laser signal will not be received by the corresponding laser receiver 5. At this time, the signal received by the control unit 6 is 0.

[0023] The detection disc 3 includes a central disc 30 and a first ring 31, a second ring 32, and a third ring 33 that extend radially outward in sequence along the central disc. The light-transmitting areas are distributed on the central disc, the first ring 31, the second ring 32, and the third ring 33. The laser emitter 4 and the laser receiver 5 are arranged along the radial direction of the detection disc 3 and are vertically corresponding to the central disc 30, the first ring 31, the second ring 32, and the third ring 33 respectively. The detection area includes ten fan-shaped areas, which are sequentially corresponding to the 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8, 8-9, 9-0 numerical areas on the pointer indication dial 11.

[0024] As Figure 2 shown, the shaded part in the figure is the light-impermeable area, that is, the fan-shaped area corresponding to the 0-1 area of the detection disc 3 and the pointer indication dial 11 is completely light-impermeable, the third ring 33 of the fan-shaped area corresponding to the 1-2 area of the pointer indication dial 11 is light-transmitting, the second ring 32 of the fan-shaped area corresponding to the 2-3 area of the pointer indication dial 11 is light-transmitting, the second ring 32 and the third ring 33 of the fan-shaped area corresponding to the 3-4 area of the pointer indication dial 11 are light-transmitting, the first ring 31 of the fan-shaped area corresponding to the 4-5 area of the pointer indication dial 11 is light-transmitting, the first ring 31 and the third ring 33 of the fan-shaped area corresponding to the 5-6 area of the pointer indication dial 11 are light-transmitting, the first ring 31 and the second ring 32 of the fan-shaped area corresponding to the 6-7 area of the pointer indication dial 11 are light-transmitting, the fan-shaped area corresponding to the 7-8 area of the pointer indication dial 11 is completely light-transmitting, the central disc 30 of the fan-shaped area corresponding to the 8-9 area of the pointer indication dial 11 is light-transmitting, and the central disc 30 and the third ring 33 of the fan-shaped area corresponding to the 9-0 area of the pointer indication dial 11 are light-transmitting.

[0025] When the pointer 12 on the pointer indication dial 11 is within the corresponding area, when the rotating rod 21 is above the 1-2 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 0000. When the rotating rod 21 is above the 2-3 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 0010. When the rotating rod 21 is above the 3-4 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 0011. When the rotating rod 21 is above the 4-5 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 0100. When the rotating rod 21 is above the 5-6 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 0101. When the rotating rod 21 is above the 6-7 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 0110. When the rotating rod 21 is above the 7-8 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 0111. When the rotating rod 21 is above the 8-9 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 1000. When the rotating rod 21 is above the 9-0 area, the detection signals of the four groups of laser emitters 4 and laser receivers 5 are converted into binary code 1001. The decimal values corresponding to each binary code are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 respectively, that is, they correspond to the values corresponding to the pointer 12 on the pointer indication dial 11.

[0026] The corresponding table of the binary codes and decimal numbers converted from the detection signals of the laser emitter 4 and the laser receiver 5 is as follows:

[0027]

[0028] Embodiment 2, a direct-reading remote water meter, the first control key and the second control key are the same key, and the work of the laser emitter 4, the laser receiver 5 and the micro stepping motor 22 can be started simultaneously through one-key control.

[0029] Other structures of this embodiment are the same as those of Embodiment 1.

[0030] The details not elaborated in the present invention are all conventional technical means well known to those skilled in the art.

[0031] The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A direct-reading remote water meter, comprising a water meter (1) and a bracket (2) arranged above the water meter (1). Characterized in that: The length of the pointer (12) in the pointer indication dial (11) in the water meter (1) corresponds to the radius of the pointer indication dial (11). A detection disc (3) corresponding to the pointer indication dial (11) is arranged on the bracket (2). The detection disc (3) includes detection areas corresponding to the values of the pointer (12) of the pointer indication dial (11). Different light-transmitting areas are opened in each detection area. A plurality of pairs of laser emitters (4) and laser receivers (5) are arranged on the bracket (2) above the detection disc (3). Both the laser emitter (4) and the laser receiver (5) are connected to a control unit (6). The control unit (6) is transmitted to a host computer through a transmission system. The host computer is provided with a first control key for controlling the start and stop of the laser emitter (4) and the laser receiver (5). Both the laser emitter (4) and the laser receiver (5) are vertically corresponding to the pointer indication dial (11) up and down. The detection disc (3) and the pointer indication dial (11) are arranged obliquely to each other. The detection disc (3) includes a central disc (30) and a first ring (31), a second ring (32) and a third ring (33) sequentially extending outward along the radial direction of the central disc. The light-transmitting areas are distributed on the central disc, the first ring (31), the second ring (32) and the third ring (33). The laser emitter (4) and the laser receiver (5) are arranged along the radial direction of the detection disc (3) and are vertically corresponding to the central disc (30), the first ring (31), the second ring (32) and the third ring (33) respectively. Both the laser emitter (4) and the laser receiver (5) are provided with four pairs and are rotatably arranged on the bracket (2) through a rotating rod (21). A micro stepping motor (22) coaxial with the pointer indication dial (11) is fixedly arranged on the bracket (2). The inner end of the rotating rod (21) is connected to the drive shaft of the micro stepping motor (22). The micro stepping motor (22) is connected to the control unit (6). The host computer is provided with a second control key for controlling the start and stop of the micro stepping motor (22). The first control key and the second control key are the same key. The detection areas include ten fan-shaped areas, which are sequentially corresponding to the 0-1, 1-2, 2-3, 3-4, 4-5, 5-6, 6-7, 7-8, 8-9, 9-0 numerical areas on the pointer indication dial (11). The fan-shaped area of the detection disk (3) corresponding to the 0-1 numerical value area of the pointer indication dial (11) is completely opaque, the third ring (33) of the fan-shaped area corresponding to the 1-2 numerical value area of the pointer indication dial (11) is transparent, the second ring (32) of the fan-shaped area corresponding to the 2-3 numerical value area of the pointer indication dial (11) is transparent, the second ring (32) and the third ring (33) of the fan-shaped area corresponding to the 3-4 numerical value area of the pointer indication dial (11) are transparent, the first ring (31) of the fan-shaped area corresponding to the 4-5 numerical value area of the pointer indication dial (11) is transparent, the first ring (31) and the third ring (33) of the fan-shaped area corresponding to the 5-6 numerical value area of the pointer indication dial (11) are transparent, the first ring (31) and the second ring (32) of the fan-shaped area corresponding to the 6-7 numerical value area of the pointer indication dial (11) are transparent, the fan-shaped area corresponding to the 7-8 numerical value area of the pointer indication dial (11) is completely transparent, the central disk (30) of the fan-shaped area corresponding to the 8-9 numerical value area of the pointer indication dial (11) is transparent, and the central disk (30) and the third ring (33) of the fan-shaped area corresponding to the 9-0 numerical value area of the pointer indication dial (11) are transparent; When the pointer (12) in the pointer indication dial (11) is within the corresponding area, when the rotating rod (21) is above the 1-2 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 0000. When the rotating rod (21) is above the 2-3 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 0010. When the rotating rod (21) is above the 3-4 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 0011. When the rotating rod (21) is above the 4-5 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 0100. When the rotating rod (21) is above the 5-6 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 0101. When the rotating rod (21) is above the 6-7 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 0110. When the rotating rod (21) is above the 7-8 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 0111. When the rotating rod (21) is above the 8-9 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 1000. When the rotating rod (21) is above the 9-0 area, the detection signals of the four groups of laser emitters (4) and laser receivers (5) are converted into binary code 1001. Then the decimal values corresponding to each binary code are 0, 1, 2, 3, 4, 5, 6, 7, 8, 9 respectively, that is, corresponding to the values corresponding to the pointer (12) on the pointer indication dial (11).

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